Conjugation: the Major Metabolic Pathway of 14C-difluhenzuron in the Boll Weevil

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The metabolic fate of 14C-diflubenzuron was studied after it was injected into Anthonomus grandis grandis Boheman. Four days posttreatment, recovery of 14C was 57.7% from treated weevils and 25% from the excreta. In the weevil, 57.3% of the 14C were recovered as unchanged diflubenzuron while 0.4% was recovered as conjugates. In the excreta, ca. 2% each of diflubenzuron and 2,6-difluorobenzamide were found and the remainder was conjugates. The total amount of conjugates was ca. 18.7%. Percentages were calculated on the basis of the total injected amount. The conjugates consist of 3 or more compounds, all of which were immediately excreted as very polar compounds. Upon acid hydrolysis, radioactive moieties from the conjugates were identified as N[[(4-chloro-2-hydroxyphenyl)amino]carbonyl]-2,6- difluorobenzamide and N-[[( 4-chlorophenyl)amino ]carbonyl]-2,6-difluoro-3-hydroxybenzamide, plus 2 unknowns.

Document Type: Research Article

Publication date: February 1, 1979

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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